+/* Make sure that a list is valid (it was initialized and is not corrupted) */
+#ifdef _DEBUG
+ #define LIST_ASSERT_VALID(l) \
+ do { \
+ Node *n, *pred; \
+ ASSERT((l)->head != NULL); \
+ ASSERT((l)->null == NULL); \
+ ASSERT((l)->tail != NULL); \
+ pred = (Node *)(&(l)->head); \
+ FOREACHNODE(n, l) \
+ { \
+ ASSERT(n->pred == pred); \
+ pred = n; \
+ } \
+ ASSERT(n == (Node *)(&(l)->null)); \
+ } while (0)
+#else
+ #define LIST_ASSERT_VALID(l) do {} while (0)
+#endif
+